The body's internal environment is separated into compartments by barriers, including epithelial barriers, which may or may not allow for the movements of molecules from one compartment to the next. Which of the following terms most accurately describes these membranes? Semipermeable or selectively permeable

Semi Permeable or selectively permeable

Explanation:

The multicellular organisms are made of the cells which contain the cell membrane. The cell membrane is composed of the phospholipids and the protein molecules which provides important properties to the membrane.

The membrane acts as the semi-permeable or selectively permeable membrane as it selects the molecules to be passed through it into and out of the cell.

In the given question, the property of the barrier which may or may not allow the molecules to pass through it is due to the selective nature of the membrane and thus the membrane is selectively membrane.

Thus, Semi-Permeable or selectively permeable is correct.